Frugality Rebalancing Material and Spiritual Values in Economic Life Opdebeeck, Hendrik Heftet / 2008 / Engelsk
Servant Leadership, Social Entrepreneurship and the Will to Serve Spiritual Foundations and Business Applications Bouckaert Luk Heftet / 2021 / Engelsk
Art, Spirituality and Economics Liber Amicorum for Laszlo Zsolnai Bouckaert Luk Heftet / 2019 / Engelsk
Servant Leadership, Social Entrepreneurship and the Will to Serve Spiritual Foundations and Business Applications Bouckaert Luk Innbundet / 2019 / Engelsk
Art, Spirituality and Economics Liber Amicorum for Laszlo Zsolnai Bouckaert Luk Innbundet / 2018 / Engelsk
